Wurmcoil Mobilizer

Wurmcoil Mobilizer enters the battlefield with
your choice of deathtouch or lifelink.
When Wurmcoil Mobilizer is put into a
graveyard from the battlefield, you may sacrifice
another creature with the ability that you didn't
choose as Wurmcoil Mobilizer entered the
battlefield. If you do, create an X/X Wurm
artifact creature token with deathtouch and
lifelink, where X is the sum of their powers.